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Reducing type communtator manufacturing method

A manufacturing method and variable diameter technology, which are applied in the field of motor parts and can solve problems such as milling and processing

Active Publication Date: 2013-03-27
SHENZHEN KAIZHONG PRECISION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome various defects caused by using mica in the manufacturing method of the commutator in the prior art so as to provide a method of manufacturing the commutator without the participation of mica
[0004] Another technical problem to be solved by the present invention is to overcome the defect that the commutator segment needs to be milled in the commutator manufacturing method in the prior art, so as to provide a commutator that does not require milling. Commutator manufacturing method for processing grooves between commutator segments

Method used

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  • Reducing type communtator manufacturing method

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Embodiment Construction

[0035] The manufacturing method of the variable-diameter commutator provided by the present invention comprises the following steps in sequence ( Figure 10 is the process flow chart):

[0036] A. Manufacture a reduced-diameter copper case 1 with a central axis hole (see image 3 , Figure 4 , Figure 5 ), the variable-diameter copper shell 1 includes a circular ring 3 and a cylinder 2 fixedly connected to the circular ring 3, the outer diameter of the cylinder 2 is smaller than the outer diameter of the circular ring 3, and the circular A number of evenly distributed grooves 4 are formed on the ring 3 and the cylinder 2, and the grooves 4 divide the ring 3 and the cylinder 2 into a number of commutating segments 5 that are independent of each other. A connecting ring 10 is reserved on the outer wall of the commutating segment 5, and the connecting ring 10 connects all the commutating segments 5 as a whole, and the commutating segment 5 includes an upper section 11 and a ...

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Abstract

The invention relates to a reducing type communtator manufacturing method. Compared with the prior art, the reducing type communtator manufacturing method adopts a support with an inner circular hole, a member used for fixing the outer circumference surface of a cylinder is formed on the inner wall of the support, the member is fittingly fixed with the portion, where a groove is arranged, of the cylinder to form a composite part, the composite part is integrally placed into a die for injection molding, and finally, a finished reducing type communtator is obtained. By removing adjacent reversing pieces of the support to realize insulation instead of milling grooves among the reversing pieces by subsequent procedures, and technical process is simplified. Further, a small pretension force is required to press the integral composite part into a die cavity, and risk of cracks during thermal treatment of plastics can be prevented by removing the support after die forming.

Description

technical field [0001] The invention relates to the field of parts for motors, in particular to a method for manufacturing a commutator for motors. Background technique [0002] The commutator is an important part of the motor. It is mainly composed of a bakelite body and copper bar commutators arranged around the bakelite body. At present, the processing method of a commutator with mica participating in the sheet arrangement goes through the following steps in sequence (see Figure 9 ): copper bar blanking, copper drain oil, mica blanking, copper bar blanking (see figure 1 ) and mica (see figure 2 ) for sheet arranging, plastic molding, heat treatment, inner hole processing, outer diameter processing, milling wire slots, milling slots between commutator pieces, brushing hook slots, brushing outer diameters, and finally forming a finished commutator. In this process, the commutator segments are arranged in a cylindrical shape, and mica sheets are inserted between each co...

Claims

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Application Information

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IPC IPC(8): H01R39/04H01R43/08
Inventor 不公告发明人
Owner SHENZHEN KAIZHONG PRECISION TECH CO LTD
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